The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1993
Filed:
Dec. 31, 1991
Daniel L Wittmer, Fredericktown, OH (US);
Square D Company, Palatine, IL (US);
Abstract
The improved plug-in base assembly of the present invention provides a means for complying with European Health and Safety requirements and particularly the requirement of IEC 439-1 paragraph 7.4.2.2. Subparagraph 7.4.2.2.3 generally requires that live parts be shielded such that they cannot be contacted when a door or cover normally protecting them is opened or removed. This requirement provides additional protection to the installer of a tap-off device against unintentional contact with the uninsulated edges of bus bars exposed through the plug-in openings. The additional protection is provided by a finger barrier which covers the normally exposed uninsulated edge of a bus bar. The finger barrier permits the electrical connectors of a tap-off unit to pass through the plug-in opening and make an electrical connection while preventing any unintentional contact of the installers fingers with the uninsulated edge of the bus bar.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile